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<td ><a href="../qtdoc/index.html">Qt 5.12</a></td><td ><a href="qtquick-index.html">Qt Quick 模块</a></td><td ><a href="qtquick-qmlmodule.html">QML类型</a></td><td >TextMetrics QML 类型</td></tr></table><table class="buildversion"><tr>
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<h3><a name="toc">目录</a></h3>
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<li class="level1"><a href="#properties">属性</a></li>
<li class="level1"><a href="#details">详细信息</a></li>
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<h1 class="title">TextMetrics QML 类型</h1>
<span class="subtitle"></span>
<!-- $$$TextMetrics-brief -->
<p>Provides metrics for a given font and text. <a href="#details">更多...</a></p>
<!-- @@@TextMetrics -->
<div class="table"><table class="alignedsummary">
<tr><td class="memItemLeft rightAlign topAlign"> 导入语句：</td><td class="memItemRight bottomAlign"> import QtQuick 2.12</td></tr><tr><td class="memItemLeft rightAlign topAlign"> Since:</td><td class="memItemRight bottomAlign">  Qt 5.4</td></tr></table></div><ul>
<li><a href="qml-qtquick-textmetrics-members.html">所有成员的列表，包括继承成员</a></li>
</ul>
<a name="properties"></a>
<h2 id="properties">属性</h2>
<ul>
<li class="fn"><b><b><a href="qml-qtquick-textmetrics.html#advanceWidth-prop">advanceWidth</a></b></b> : real</li>
<li class="fn"><b><b><a href="qml-qtquick-textmetrics.html#boundingRect-prop">boundingRect</a></b></b> : rect</li>
<li class="fn"><b><b><a href="qml-qtquick-textmetrics.html#elide-prop">elide</a></b></b> : enumeration</li>
<li class="fn"><b><b><a href="qml-qtquick-textmetrics.html#elideWidth-prop">elideWidth</a></b></b> : real</li>
<li class="fn"><b><b><a href="qml-qtquick-textmetrics.html#elidedText-prop">elidedText</a></b></b> : string</li>
<li class="fn"><b><b><a href="qml-qtquick-textmetrics.html#font-prop">font</a></b></b> : font</li>
<li class="fn"><b><b><a href="qml-qtquick-textmetrics.html#height-prop">height</a></b></b> : real</li>
<li class="fn"><b><b><a href="qml-qtquick-textmetrics.html#text-prop">text</a></b></b> : string</li>
<li class="fn"><b><b><a href="qml-qtquick-textmetrics.html#tightBoundingRect-prop">tightBoundingRect</a></b></b> : rect</li>
<li class="fn"><b><b><a href="qml-qtquick-textmetrics.html#width-prop">width</a></b></b> : real</li>
</ul>
<!-- $$$TextMetrics-description -->
<a name="details"></a>
<h2 id="details">详细信息</h2>
<p><a href="qml-qtquick-textmetrics.html">TextMetrics</a> calculates various properties of a given string of text for a particular font.</p>
<p>It provides a declarative API for the functions in <a href="../qtgui/qfontmetricsf.html">QFontMetricsF</a> which take arguments.</p>
<pre class="cpp">

  TextMetrics {
      id: textMetrics
      font<span class="operator">.</span>family: <span class="string">&quot;Arial&quot;</span>
      elide: Text<span class="operator">.</span>ElideMiddle
      elideWidth: <span class="number">100</span>
      text: <span class="string">&quot;Hello World&quot;</span>
  }

  MyItem {
      text: textMetrics<span class="operator">.</span>elidedText
  }

</pre>
<p><b>请参考 </b><a href="../qtgui/qfontmetricsf.html">QFontMetricsF</a> 和 <a href="qml-qtquick-fontmetrics.html">FontMetrics</a>。</p>
<!-- @@@TextMetrics -->
<h2>属性文档</h2>
<!-- $$$advanceWidth -->
<div class="qmlitem"><div class="qmlproto">
<div class="table"><table class="qmlname">
<tr valign="top" class="odd" id="advanceWidth-prop">
<td class="tblQmlPropNode"><p>
<a name="advanceWidth-prop"></a><span class="name">advanceWidth</span> : <span class="type"><a href="../qtqml/qml-real.html">real</a></span></p></td></tr>
</table></div>
</div><div class="qmldoc"><p>This property holds the advance in pixels of the characters in <a href="qml-qtquick-textmetrics.html#text-prop">text</a>. This is the distance from the position of the string to where the next string should be drawn.</p>
<p><b>请参考 </b><a href="../qtgui/qfontmetricsf-obsolete.html#width-1">QFontMetricsF::width()</a>。</p>
</div></div><!-- @@@advanceWidth -->
<br/>
<!-- $$$boundingRect -->
<div class="qmlitem"><div class="qmlproto">
<div class="table"><table class="qmlname">
<tr valign="top" class="odd" id="boundingRect-prop">
<td class="tblQmlPropNode"><p>
<a name="boundingRect-prop"></a><span class="name">boundingRect</span> : <span class="type"><a href="../qtqml/qml-rect.html">rect</a></span></p></td></tr>
</table></div>
</div><div class="qmldoc"><p>This property holds the bounding rectangle of the characters in the string specified by <a href="qml-qtquick-textmetrics.html#text-prop">text</a>.</p>
<p><b>请参考 </b><a href="../qtgui/qfontmetricsf.html#boundingRect-1">QFontMetricsF::boundingRect()</a> 和 <a href="qml-qtquick-textmetrics.html#tightBoundingRect-prop">tightBoundingRect</a>。</p>
</div></div><!-- @@@boundingRect -->
<br/>
<!-- $$$elide -->
<div class="qmlitem"><div class="qmlproto">
<div class="table"><table class="qmlname">
<tr valign="top" class="odd" id="elide-prop">
<td class="tblQmlPropNode"><p>
<a name="elide-prop"></a><span class="name">elide</span> : <span class="type"><a href="../qtqml/qml-enumeration.html">enumeration</a></span></p></td></tr>
</table></div>
</div><div class="qmldoc"><p>This property holds the elide mode of the text. This determines the position in which the string is elided. The possible values are:</p>
<ul>
<li><code>Qt::ElideNone</code> - No eliding; this is the default value.</li>
<li><code>Qt::ElideLeft</code> - For example: &quot;..&#x2e;World&quot;</li>
<li><code>Qt::ElideMiddle</code> - For example: &quot;He..&#x2e;ld&quot;</li>
<li><code>Qt::ElideRight</code> - For example: &quot;Hello..&#x2e;&quot;</li>
</ul>
<p><b>请参考 </b><a href="qml-qtquick-textmetrics.html#elideWidth-prop">elideWidth</a> 和 <a href="../qtgui/qfontmetrics.html#elidedText">QFontMetrics::elidedText</a>。</p>
</div></div><!-- @@@elide -->
<br/>
<!-- $$$elideWidth -->
<div class="qmlitem"><div class="qmlproto">
<div class="table"><table class="qmlname">
<tr valign="top" class="odd" id="elideWidth-prop">
<td class="tblQmlPropNode"><p>
<a name="elideWidth-prop"></a><span class="name">elideWidth</span> : <span class="type"><a href="../qtqml/qml-real.html">real</a></span></p></td></tr>
</table></div>
</div><div class="qmldoc"><p>This property holds the largest width the text can have (in pixels) before eliding will occur.</p>
<p><b>请参考 </b><a href="qml-qtquick-textmetrics.html#elide-prop">elide</a> 和 <a href="../qtgui/qfontmetrics.html#elidedText">QFontMetrics::elidedText</a>。</p>
</div></div><!-- @@@elideWidth -->
<br/>
<!-- $$$elidedText -->
<div class="qmlitem"><div class="qmlproto">
<div class="table"><table class="qmlname">
<tr valign="top" class="odd" id="elidedText-prop">
<td class="tblQmlPropNode"><p>
<a name="elidedText-prop"></a><span class="name">elidedText</span> : <span class="type"><a href="../qtqml/qml-string.html">string</a></span></p></td></tr>
</table></div>
</div><div class="qmldoc"><p>This property holds an elided version of the string (i.e&#x2e;, a string with &quot;..&#x2e;&quot; in it) if the string <a href="qml-qtquick-textmetrics.html#text-prop">text</a> is wider than <a href="qml-qtquick-textmetrics.html#elideWidth-prop">elideWidth</a>. If the text is not wider than <a href="qml-qtquick-textmetrics.html#elideWidth-prop">elideWidth</a>, or <a href="qml-qtquick-textmetrics.html#elide-prop">elide</a> is set to <code>Qt::ElideNone</code>, this property will be equal to the original string.</p>
<p><b>请参考 </b><a href="../qtgui/qfontmetricsf.html#elidedText">QFontMetricsF::elidedText()</a>。</p>
</div></div><!-- @@@elidedText -->
<br/>
<!-- $$$font -->
<div class="qmlitem"><div class="qmlproto">
<div class="table"><table class="qmlname">
<tr valign="top" class="odd" id="font-prop">
<td class="tblQmlPropNode"><p>
<a name="font-prop"></a><span class="name">font</span> : <span class="type"><a href="qml-font.html">font</a></span></p></td></tr>
</table></div>
</div><div class="qmldoc"><p>This property holds the font used for the metrics calculations.</p>
</div></div><!-- @@@font -->
<br/>
<!-- $$$height -->
<div class="qmlitem"><div class="qmlproto">
<div class="table"><table class="qmlname">
<tr valign="top" class="odd" id="height-prop">
<td class="tblQmlPropNode"><p>
<a name="height-prop"></a><span class="name">height</span> : <span class="type"><a href="../qtqml/qml-real.html">real</a></span></p></td></tr>
</table></div>
</div><div class="qmldoc"><p>This property holds the height of the bounding rectangle of the characters in the string specified by <a href="qml-qtquick-textmetrics.html#text-prop">text</a>. It is equivalent to:</p>
<pre class="cpp">

  textMetrics<span class="operator">.</span>boundingRect<span class="operator">.</span>height

</pre>
<p><b>请参考 </b><a href="qml-qtquick-textmetrics.html#boundingRect-prop">boundingRect</a>。</p>
</div></div><!-- @@@height -->
<br/>
<!-- $$$text -->
<div class="qmlitem"><div class="qmlproto">
<div class="table"><table class="qmlname">
<tr valign="top" class="odd" id="text-prop">
<td class="tblQmlPropNode"><p>
<a name="text-prop"></a><span class="name">text</span> : <span class="type"><a href="../qtqml/qml-string.html">string</a></span></p></td></tr>
</table></div>
</div><div class="qmldoc"><p>This property holds the text used for the metrics calculations.</p>
</div></div><!-- @@@text -->
<br/>
<!-- $$$tightBoundingRect -->
<div class="qmlitem"><div class="qmlproto">
<div class="table"><table class="qmlname">
<tr valign="top" class="odd" id="tightBoundingRect-prop">
<td class="tblQmlPropNode"><p>
<a name="tightBoundingRect-prop"></a><span class="name">tightBoundingRect</span> : <span class="type"><a href="../qtqml/qml-rect.html">rect</a></span></p></td></tr>
</table></div>
</div><div class="qmldoc"><p>This property holds a tight bounding rectangle around the characters in the string specified by <a href="qml-qtquick-textmetrics.html#text-prop">text</a>.</p>
<p><b>请参考 </b><a href="../qtgui/qfontmetricsf.html#tightBoundingRect">QFontMetricsF::tightBoundingRect()</a> 和 <a href="qml-qtquick-textmetrics.html#boundingRect-prop">boundingRect</a>。</p>
</div></div><!-- @@@tightBoundingRect -->
<br/>
<!-- $$$width -->
<div class="qmlitem"><div class="qmlproto">
<div class="table"><table class="qmlname">
<tr valign="top" class="odd" id="width-prop">
<td class="tblQmlPropNode"><p>
<a name="width-prop"></a><span class="name">width</span> : <span class="type"><a href="../qtqml/qml-real.html">real</a></span></p></td></tr>
</table></div>
</div><div class="qmldoc"><p>This property holds the width of the bounding rectangle of the characters in the string specified by <a href="qml-qtquick-textmetrics.html#text-prop">text</a>. It is equivalent to:</p>
<pre class="cpp">

  textMetrics<span class="operator">.</span>boundingRect<span class="operator">.</span>width

</pre>
<p><b>请参考 </b><a href="qml-qtquick-textmetrics.html#boundingRect-prop">boundingRect</a>。</p>
</div></div><!-- @@@width -->
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